More from Chalkdust
A symmetric universe
Sam Kay reflects on building a universe
Top ten vote issue 08
Vote for your favourite Chalkdust regular
Primes à la Euler
Infinitely many primes ending in 1, 3, 7 and 9 proved in typically Eulerian style.
Mike Jordan on machine learning
Undoubtedly the most influential voice on this hottest of hot topics.
Problem solving 101
Never be stumped by a maths problem again, with this crash course from the ever-competent Stephen Muirhead
Changing the status quo
Difficulties in designing a voting system for referenda